Number of Clock Cycles in Assembly Instructions

In this article at OpenGenus, we have listed the Number of Clock Cycles in different Assembly Instructions like LEA, XCHG and others.

Table of contents:

1. Table: Number of Clock Cycles in Assembly Instructions

Table: Number of Clock Cycles in Assembly Instructions

Following table lists the Number of Clock Cycles in different Assembly Instructions:

Operation	Clock Cyles
MOV	0.25 to 1
XCHG	1
ADD	1
ADC	1 to 2
SUB	1 to 2
SBB	1 to 2
CMP	1 to 2
AND	1 to 2
OR	1 to 2
XOR	1 to 2
INC	1 to 2
DEC	1 to 2
NOT	1
NEG	1
SHL	1 to 2
SHR	1 to 2
LEA	1
ROL	1
ROR	1
PUSH	1 to 2
POP	1 to 2
CALL	4 to 7
RET	4 to 7
JMP	3 to 6
LOOP	2 to 3
OUT	10
MUL	3 to 19
IMUL	4 to 23
FPU	12 to 80
CALL	5 to 22
RET	5 to 18
INT	25 to 120
DIV (8 bit)	24 to 44
DIV (64 bits)	156
IDIV	55 TO 70

DIV instruction has the maximum number of clock cycles across all assembly instructions. For 64 bit data, DIV can involve upto 150 clock cycles.

With this article at OpenGenus, you must have the complete idea of number of clock cycles involved in different assembly instructions.